All Questions

0
votes
0answers
13 views

Blockchain.info block explorer help

Using the python blockchain.info client When I attempt to get blocks and print the result I get this output: <blockchain.blockexplorer.SimpleBlock object at 0x103c6b208> How can I access the ...
0
votes
1answer
43 views

+Accidently sent my BCH from my ledger nano S to a BTC address in Coinbase how can i get it back? [duplicate]

+Accidently sent my BCH from my ledger nano S to a BTC address in Coinbase and it went thru but never got to my Coinbase account, how can i get it back?
0
votes
0answers
15 views

How do I get started [duplicate]

How can I mine cryptocurrency and is it possible to mine it with termux? Or should I use an app? I don't have a computer.
2
votes
1answer
111 views

Recovery of a corrupted wallet

I have a very old wallet.dat that I've put into my .bitcoin folder. When trying to run bitcoind, the service stops giving the following error 2019-06-11T18:14:02Z Using wallet directory /home/nom/....
1
vote
1answer
22 views

Consistenly getting Block magic mismatch error?

I have bitcoind running (0.18) in my ubuntu machine and it keeps shutting down due after getting this error: ERROR: ReadRawBlockFromDisk: Block magic mismatch for CDiskBlockPos(nFile=0, nPos=68821043)...
0
votes
0answers
32 views

spend founds from p2wsh address,non-mandatory-script-verify-flag (Signature must be zero for failed CHECK(MULTI)SIG operation) (code 64)

i want spent coin from p2wsh address on btc testnet3 network, i use bitcoinj 0.15.2 build transaction and sign it, use 2/3 multiSig when i send raw transaction by bitcoin core 0.17.0 command line by ...
-1
votes
0answers
21 views

How to code simple CPU pool miner? [on hold]

I want to code own CPU pool miner but I can't find any example. Does someone knows about basic, simple CPU pool miner ? I found some examples but none of them was pool miner. I want to use pool ...
4
votes
1answer
35 views

Why doesn't Lightning have DNS bootstrapping?

Bitcoin uses a DNS-based bootstrapping mechanism to help new nodes find peers. As far as I'm aware, Lightning doesn't have such mechanism, and new users are supposed to just search for node addresses ...
1
vote
0answers
23 views

Error pay invoice. Ran out of routes to try after 2 attempts: see paystatus

I wanted to send some satoshis on testnet lightning network but I got "Ran out of routes to try after 2 attempts: see paystatus" error. I have a channel with 02...48 (1ML.com node ALPHA) and created ...
0
votes
1answer
34 views

How to manually sign a transaction with multiple inputs and multiple outputs?

I'm developing transaction constructor, but i faced several problems. To some of which i found answer in How to sign a transaction with multiple inputs?, for the rest i'll try to explain: When we ...
0
votes
1answer
35 views

How to write OP_CHECKMULTISIG for the following 1-of-2 multisig P2SH script

OP_IF OP_SHA256 <hash of secret> OP_EQUALVERIFY <pubKey of swap> OP_CHECKSIG OP_ELSE <relative locktime> OP_CHECKSEQUENCEVERIFY OP_DROP <pubKey of refund> ...
0
votes
1answer
13 views

From unsigned to psbt transaction

Recently, I happened to see in a codebase something like the following snippet to convert a standard transaction into a psbt format: txHex = "...
0
votes
1answer
47 views

Procedure for Deriving Payment Addresses

I'm trying to understand the HD wallet payment derivation procedure, so assume: Ownership of a Bitcoin HD Wallet on an external smart device Exported account level extended public key (xpub....) from ...
0
votes
0answers
29 views

Invalid -rpcallowip subnet specification: *.Valid are a single IP, a network/netmask or a network/CIDR

I'm new and all this of bitcoin, but I'm trying… I downloaded BitcoinCore and GUIminer, I made the configuration for solo minning (I created my username and password, I set Bitcoin client path) but ...
1
vote
1answer
32 views

What is transaction “finality”?

bitcoind IsFinalTx() as seen here checks the properties of a transaction in this order: Is nLockTime exactly 0? That's final. return. If it's not 0, is it below the current block height / time? If so,...
1
vote
1answer
35 views

How exactly do I decode the block file info in leveldb?

Base on the links https://github.com/bitcoin/bitcoin/blob/fcbc8bfa6d10cac4f16699d6e6e68fb6eb98acd0/src/main.h#L392 and What are the keys used in the blockchain levelDB (ie what are the key:value ...
0
votes
0answers
12 views

Blockchain Payment Has Been Unconfirmed Please Help [duplicate]

Could someone please help me with this trancaction, i sent it via bitmex and not sure how to use fee bump. https://www.blockchain.com/btc/tx/...
0
votes
1answer
18 views

EstimateSmartFee returning same amount, regardless of conf_target

Running 18.0 on Testnet, fully synced at 1541869 blocks. bitcoin-cli estimatesmartfee 10 { "feerate": 0.00001014, "blocks": 10 } bitcoin-cli estimatesmartfee 50 { "feerate": 0.00001014, "...
0
votes
1answer
12 views

BlockUntilSyncedToCurrentChain: txindex is catching up on block notifications

The message "BlockUntilSyncedToCurrentChain: txindex is catching up on block notifications" is appearing regularly in my debug.log. When these messages appear, I can be sure that lnd will not be able ...
1
vote
1answer
27 views

Why a specific bitcoin value of a tx message appears in source IP address and then comes to same IP address as the destination address?

Sometime back, I created two wallets on two distinct cellphones. I sent a specific bitcoin value (A bitcoin) from one cellphone to another one. During this process, I captured the entire traffic. ...
0
votes
1answer
26 views

Read an XPUB list of transactions to Python using my own node [on hold]

Anyone familiar with a Python library that can get a list of all transactions under an XPUB but by connecting to a Bitcoin node through RPC?
1
vote
2answers
36 views

How to check the balance of the list of 1 million Bitcoin Addresses?

How to check the balance of the list of 1 million Bitcoin Addresses? Is there such a program?
3
votes
1answer
41 views

How many nodes is too many?

Has anyone done the math on this? For example, if we had 10’s of millions of nodes all connecting to 8 peers would there be some latency issues in propagating blocks across the network in the 10 ...
-2
votes
0answers
20 views

Multiple sources [on hold]

Hi can someone help me I have multiple wallets and transactions that I'm not sure how to confirm them so I get the Bitcoin ,dogecoin. Please help
2
votes
1answer
20 views

How to parse values in block index leveldb?

So I'm trying to read the block files with Python. From this link, What are the keys used in the blockchain levelDB (ie what are the key:value pairs)?, it tells you how to access the files with ...
0
votes
0answers
27 views

why a specific transaction value and it's output address which is sent from a specific IP address, returns from another address to that IP address? [duplicate]

I wrote a code to extract bitcoin output addresses and their values from TX messages of the bitcoin protocol. to test it, I prepare this scenario: first I send a specific bitcoin value(for example A ...
0
votes
1answer
36 views

Does Bitcoin Core still use “Bitcoin seed” in addition to a seed like stated in BIP 32?

In BIP 32 it's stated that a Master Private key is generated by hashing the concatenation of a random seed and the string "Bitcoin seed". And is like so in the example implementations. But I couldn't ...
0
votes
0answers
31 views

Bitcoin doesn't create tor hidden service

Configuring Bitcoin 0.18 node in a brand new Whonix VM on latest Qubes R4.0. Trying to make Bitcoin create a hidden tor service following method 1 here. Also followed what was applicable here. ...
1
vote
1answer
23 views

How to get balance for a label

I have lots of addresses organized under a label. Is there a command to show the total remaining amount available under a label ? (Or address) I am building a payment gateway and I need get the total ...
1
vote
1answer
21 views

bitaddress.org paper wallet vs. single wallet

After generating a single wallet (at bitaddress.org), the paper wallet option at the top shows a different public address? Why is the public address different?
2
votes
1answer
79 views

Is there a flag or specific message in a bitcoin pcap to show us our bitcoin transaction is confirmed or not?

Assume that I send a specific value from a source wallet to a destination wallet and simultaneously capture the input and output traffic with Wireshark. I can extract output address and it's value ...
2
votes
1answer
42 views

Why do aggregate Schnorr signatures reverse the hash and the random number

A bitcoin signature has: z = hash(m) Using a private key pk we can generate a signature for message m consisting of two numbers: r (x coordinate of the random point R = k×G) and s = (z+r⋅pk)/k. ...
4
votes
1answer
310 views

Is there a reason to why Bitcoin Core does not implement BIP39?

Is there a specific reason to why BIP39 isn't added to Bitcoin Core? Seems very trivial to add and am confused to why it isn't there.
4
votes
1answer
51 views

How can I make transaction output time locked?

Is it possible to submit some coins to some address and make them spendable after some period of time? Like I want submit 1btc to address 1Kc24m... and make that output to be spendable after january ...
0
votes
0answers
22 views

My Bitcoin client has stopped syncing

As you can see my client is stuck on 99,7% with unknown. Syncing Headers(577895), It has been in this state since last day synced(which you can see). How can I get it to work since I have plenty of ...
0
votes
1answer
46 views

System requirements for running a Bitcoin Core node on testnet

What are the minimum systems requirements for running a Bitcoin Core full node on testnet?
2
votes
1answer
21 views

Why is not possibile to convert a signed transaction into psbt?

In the bitcoin core doc is explicitly said that conversion from hex to psbt are only allowed for unsigned transactions, or, at most, passing a signed one with the permitsigdata param set to true, but ...
1
vote
1answer
104 views

How to calculate the size of multisig transaction?

Can you help or suggest the formula for calculation of simple multi-sig transactions? I have an issue to calculate the size of multi signature 2-2 transaction. I tried to follow this: Predict ...
0
votes
0answers
27 views

Shamir SSSS how to split the example if i want to use 12 Bits instead of 11 Bits?

Shamir Mnemonics are encoded into 3 components - the Version, the Parameters, and the Shamir Share. The encoded components are concatenated together to form a Shamir Mnemonic. First Component is ...
0
votes
2answers
54 views

How can I accept Bitcoin as a payment without a 3rd party gateway

I want to create a website where users can pay with Bitcoin. However I want to create my own payment gateway because I do not want to rely on services like BitPay. I want a unique BTC address for ...
-1
votes
0answers
37 views

Where can I see the unconfirmed RawTX blockchain?

Is there such a service or website? Where can I see the unconfirmed RawTX blockchain?
2
votes
3answers
61 views

Why can't an intermediary Lightning node take (nearly) all fees?

Consider a Lightning payment: Alice wants to pay 100 sat to Dave via two intermediary hops: Alice - Bob - Charlie - Dave. Both Bob and Charlie advertise a fee of 2 sat. Alice sends 104 sat to Bob, ...
0
votes
1answer
26 views

What's the purpose of CSHA256::Write and CSHA256::Finalize

Looking at Bitcoin Core implementation of SHA256, I noticed it was a bit different from OpenSSL's implementation. In OpenSSL, you would initialize a variable with SHA256_CTX when in Bitcoin Core it's ...
0
votes
1answer
35 views

Stay on memory pool when I sending multiple transaction from bitcoin wallet

I run the bitcoin client 0.17.1 on my ubuntu 18.04 desktop. I have some balance in my wallet. Also my client is fully synced.I have face the wallet conflict. When I send multiple transaction at once(...
1
vote
3answers
51 views

What is the order in which UTXOs are sorted in a block?

Let's say, I am trying to do a double spend by creating two transactions almost immediately, is it possible that both the transactions are added in one block ? If yes, then which transaction is valid ...
2
votes
1answer
52 views

Is signature/private-key required to accept payment over Lightning Network?

To (1) create an invoice and (2) accept payment in LN, the node has to be online. But does the node need to sign the creating invoice or the accepting payment? We don't have to have private key ...
0
votes
0answers
112 views

cant send btc, Uneconomical UTXO requested

Im trying to send btc worth of 2$ and i keep getting message "Uneconomical UTXO requested [type: 1 (limit 46629), txOut.val: 38546, required: 83847]" i even tried sending 1$ but its still the same can ...
1
vote
1answer
29 views

How to request a list of blocks using bitcoin-cli?

I'm trying to figure out how to use bitcoin-cli effectively to request a list of 50 blocks. As far as I am aware, bitcoin-cli getblock list does not work. Also how to best extract information out of ...
1
vote
1answer
16 views

Having trouble transfering private keys from Bitcoin Core to Electrum, for want of not having to wait for sync

This morning, I purchased some bitcoin for the first time on CEX.IO, and soon withdrew it to the Bitcoin Core wallet I had set up. What I did not realise was that I would have to download the ...
1
vote
1answer
20 views

Can I explicitly specify a path for Lightning payment?

From what I understand, in the current Lightning implementations payments work as follows: calculate best N paths according to some metric (like, total fees); try to perform the payment through the ...

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